7811438364312 has 64 divisors (see below), whose sum is σ = 21327308674560. Its totient is φ = 2364504105600.

The previous prime is 7811438364311. The next prime is 7811438364329. The reversal of 7811438364312 is 2134638341187.

It is a super-3 number, since 3×7811438364312³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7811438364311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15999223 + ... + 16480230.

It is an arithmetic number, because the mean of its divisors is an integer number (333239198040).

Almost surely, 2^{7811438364312} is an apocalyptic number.

It is an amenable number.

7811438364312 is an abundant number, since it is smaller than the sum of its proper divisors (13515870310248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7811438364312 is a wasteful number, since it uses less digits than its factorization.

7811438364312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32480384 (or 32480380 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The spelling of 7811438364312 in words is "seven trillion, eight hundred eleven billion, four hundred thirty-eight million, three hundred sixty-four thousand, three hundred twelve".